Whilst blame for yesterday's catastrophe isn't a related issue, oddly enough there is a Russian connection.
A ship called Rhosus, owned by a Russian, Mr Igor Grechushkinof, became stranded in Beirut during October 2013 when he declared bankruptcy. The ship's cargo was the ammonium nitrate, bound for Mozambique, which was the cause of the explosion. Mr Grechushkinof it seems washed his hands of the vessel and walked. Ironically, he now lives here in Cyprus, where he's the manager of a shipping company.
What seems to have happened is that a welder, working to improve the security of the adjacent building, started a fire in an area where fireworks were stored. Ammonium nitrate degrades over time and in heat and becomes very volatile, especially in it's pure form (nowadays another chemical has by international law to be added to improve safety). So, the exploding fireworks ignited what amounted to a giant bomb. The fire crew which turned up to the initial incident were vaporised in the explosion.
It all sounds remarkably similar to the Mari incident (with echoes perhaps of Chernobyl) and in the same vein blame must surely rest with those who not only decided to store the dangerous chemicals there but then simply to forget about them.